Electronic Telegram No. 2593 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network GEMINID METEORS 2010 P. Jenniskens, SETI Institute, reports that the Geminids had a regular return in 2010, with a peak rate ZHR = 140 +/- 30 meteor/hr at solar longitude 262.2 deg. The International Meteor Organization (http://www.imo.net) reports ZHR = 82 meteors/hr at solar longitude 261.7 deg, just before the peak, while K. Mameta (Kobe, Japan; via S. Nakano, Sumoto), had an average ZHR = 115 meteors/hr at solar longitude 262.4 deg, just after the peak. Observing from Fremont Peak Observatory (California), P. Jenniskens and M. Koop detected what appear to be lunar impacts on Dec. 14d02h45m09s and 14d03h11m08s.5 UT while monitoring the dark side of the moon for potential impact flashes during Dec. 14.073-14.303 UT using a Celestron C8 (20-cm f/10) telescope (+ Watec 920H2 Ultimate camera in prime focus); the two clear events that were seen during operatios were later confirmed by checking the tapes, and additional processing will be forthcoming regarding location on the lunar surface, brightness information, etc. J. M. Trigo-Rodriguez, Institute for Space Sciences, Consejo Superior de Investigaciones Cientificas; J. M. Madiedo, Universidad de Huelva; P. Pujols, Agrupacio Astronomica Osona; J. C. Millan, Asocciacion Astronomica Hubble; J. A. Azcarate, Universidad de Castilla, La Mancha; J. Zamorano and F. Ocana, Universidad Complutense, Madrid, report that their video stations operating in the framework of the Spanish Fireball Network saw a rate ZHR = 80 +/- 7 meteors/hr (for the magnitude distribution index, r = 1.8, derived from the observations; and the number of meteors filmed, N = 45, for meteors brighter than magnitude 4) between Dec. 13.9 and 14.1 UT (mean solar longitude 261.7 deg). Remarkable was the detection of three bolides brighter than the moon at Dec. 13d21h46m14s, 13d23h13m52s, and 14d00h34m01s UT, corresponding to solar longitudes 261.65 to 261.75 deg. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2010 CBAT 2010 December 18 (CBET 2593) Daniel W. E. Green